Holding(s) in Company

IQE PLC
21 August 2006

IQE PLC

21 August 2006


                                    IQE plc

                          (the ''Company'' or ''IQE'')

                            Notification of Interest

The Company has been informed by a letter dated 17 August 2006 that UBS AG had a
notifiable interest in 30,023,870 ordinary 1p shares in IQE plc, equivalent to
7.42% of the issued share capital of the Company.

Contacts

IQE plc                               [phone]
Leslie Coventry

Noble & Company Limited               [phone]
John Llewellyn-Lloyd
Graeme Bayley




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